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mixture of 10 kmol of 70 mol% benzene in toluene is distilled at atmospheric pressure using...

mixture of 10 kmol of 70 mol% benzene in toluene is distilled at atmospheric pressure using differential distillation with a constant boil up the rate of 10 mol/min. When 50% (by mole) has been vaporized, report the residue composition, the average vapor composition, the temperature of the still, and how long the process takes using :

1. K-constant=1.48

2.alpha constant=2.41

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